# OpenVAS Vulnerability Test
# $Id$
# Description: Auto-generated from advisory DSA 975-1
#
# Authors:
# Thomas Reinke <reinke@securityspace.com>
#
# Copyright:
# Copyright (c) 2007 E-Soft Inc. http://www.securityspace.com
# Text descriptions are largerly excerpted from the referenced
# advisory, and are Copyright (c) the respective author(s)
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2,
# as published by the Free Software Foundation
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#
if(description)
{
 script_id(56278);
 script_bugtraq_id(16388);
 script_cve_id("CVE-2006-0043");
 script_version ("$");
 script_tag(name:"cvss_base", value:"4.6");
 script_tag(name:"risk_factor", value:"Medium");
 name = "Debian Security Advisory DSA 975-1 (nfs-user-server)";
 script_name(name);

 desc = "The remote host is missing an update to nfs-user-server
announced via advisory DSA 975-1.

Marcus Meissner discovered that attackers can trigger a buffer overflow
in the path handling code by creating or abusing existing symlinks, which
may lead to the execution of arbitrary code.

This vulnerability isn't present in the kernel NFS server.

This update includes a bugfix for attribute handling of symlinks. This
fix does not have security implications, but at the time when this DSA
was prepared it was already queued for the next stable point release, so
we decided to include it beforehand.

For the old stable distribution (woody) this problem has been fixed in
version 2.2beta47-12woody1.

For the stable distribution (sarge) this problem has been fixed in
version 2.2beta47-20sarge2.

For the unstable distribution (sid) this problem has been fixed in
version 2.2beta47-22.

We recommend that you upgrade your nfs-user-server package.

Solution:
https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20975-1

Risk factor : High";

 script_description(desc);

 summary = "Debian Security Advisory DSA 975-1 (nfs-user-server)";
 script_summary(summary);

 script_category(ACT_GATHER_INFO);

 script_copyright("Copyright (c) 2006 E-Soft Inc. http://www.securityspace.com");
 family = "Debian Local Security Checks";
 script_family(family);
 script_dependencies("gather-package-list.nasl");
 script_require_keys("ssh/login/packages");
 exit(0);
}

#
# The script code starts here
#

include("revisions-lib.inc");
include("pkg-lib-deb.inc");
vuln = 0;
if(isdpkgvuln(pkg:"nfs-user-server", ver:"2.2beta47-12woody1", rls:"DEB3.0")) {
    vuln = 1;
}
if(isdpkgvuln(pkg:"ugidd", ver:"2.2beta47-12woody1", rls:"DEB3.0")) {
    vuln = 1;
}
if(isdpkgvuln(pkg:"nfs-user-server", ver:"2.2beta47-20sarge2", rls:"DEB3.1")) {
    vuln = 1;
}
if(isdpkgvuln(pkg:"ugidd", ver:"2.2beta47-20sarge2", rls:"DEB3.1")) {
    vuln = 1;
}

if(vuln) {
    security_hole(0);
}
